Glass rolling apparatus



1933- J. H. FOX ET AL GLASS ROLLING APPARATUS 2 Sheets-Sheet 2 INVENTOR vIlllIlI/IIIll/lftlllll ll IIIIIIIII!!! 141/4 rIIIIIIIIIIIIII/IQ I .lIlI/IIIQVIJ r!!! Patented Dec. 19, 1933 PATENT OFFICE.

GLASS ROLLING APPARATUS John a. Fox and William OWemPittsbur-gh, Pa., assignors to-Pittsburgh Plate Glass Company, a corporation of Pennsylvania f APplicationM'ay 6,1932. Serial No. 609,572 7 6. Claims (crew-95) The invention relatestoglass rolling apparatus of the general type shown in the Gelstharp Patent No. 1,615,834, dated February 1, 1927,{ wherein a sheet of glass is rolled vertically from a molten Q bath by a pair of sizing; rolls which engage the surface of the glass, such glass sheetafter formation being directed horizontally through an annealing leer. The invention has for its principal objectsthe provision of a simplified and improved 1Q structure at the ends of the rolls for supporting them and for supplying a coolingmedium to the roll bearings and to the interiorof the roll. A further L object is the provision of a structure whereby the roll bearings may be placed relatively close to the drawing pot or receptacle, and whereby the length of the roll spindles may be reduced to a minimum. Certain embodiments of the invention-are illustrated in the accompanying drawings, wherein:

e 1 is a vertical section through one form of apparatus. 77 Fig. 2 is a vertical section through a modification. And Fig. 31s a vertical section through still anotherm'odification.

, Referring to Figql, 1 is the-draw pot or receptacleicontaining a body of molten glass 2, such 'pot being connected to a suitable melting tank, notshown; is one of a pair of sizing rolls mounted so that its periphery engages the glass and consisting of a body portion 4 and a pair oi spindles 5 at the end of the body portion, only one of which is shown. -It'will be understood that the half of the apparatus which is not shown is similar to that shown in Fig.1 except that no driving means isapplied to the other end of the roll. The driving meansin this case comprises thetumbler shaft 5' 'which engages the head 6 of the tumbler member which is secured to the end-pf the spindle. This tumbler member comprisesa keyed'end '7 which fits into therend of thespindle and is secured in position by means of the bolts 7*,this being a drive means for rolls well-known in the art. Mounted in the spindle androllis atube 8 which divides the interior into a; pairof concentric passages 9 and 10. The inner endofthe'fpipe is connected toa similar pipe 8* lying in the other half of theroll, the two' ends being connected by the casting 11 "provided with the perforations 12, 12 permitting a flow of liquid from the passageway 9 to'the passageway 10, The .outer end or the tube is mounted in a cylindrical casting 13 provided around its periphery with a groove 14 which communicates with the interiorof the casting by means .of the perforations 1'5. Packing is .pro-

vided in a groove 1 6 around the periphery of the casting.

. The roll spindle is supported in an arm 1'? which has at its lower end integral therewith the sleeve 18. Mounted at the inner end of this sleeve is a bearing member 19 provided with a spiral groove 20. 7 This serves as a'cooling passage, water being supplied to one end of the groove bythe pipe 21 withdrawn from the otherend by the pipef22. This prevents the bearing from becoming over- 05 heated due to its proximity to the body of glass injthe pot. Also mounted inthe sleeve 18 are a pair of rings23 and 24 provided with grooves around their peripheries and with perforations which register with perforations .25 and 26 through the spindle. Suitable packing is interposed between the bearing member 19 and the ring 23 and between the ring 23 and ring 24. Packingis also provided. to the right of the ring 24, suchpacking being held in place by means of the gland 27. Wateris supplied for cooling the roll through a pipe 28 and Withdrawn through the pipe 29. The inflowing water through the pipe 23 passes through the perforations 26 to the interior of the casting 13" and'then flows to the left through the pipe 8 and discharges into the passageway 10 through the openings 12. The water which is thus supplied .to the middle of the roll flows to the right through the passageway 10 anddischarges through thejopenings 25 to the 5 ring 23 and thence through the pipe 29. Provision is thus made in the sleeve 18 for coolingthe bearing 19' and for circulating" and cooling the flow of liquid back and forth through the roll. This makes a compact structure permitting of the use or, a relatively short spindle. v

Fig; 2 illustrates a modification which differs from that of Fig. 1 in that the supply of cooling water is caused to flow first through the roll and then throughthe bearing so that the single flow of water accomplishes the two functions, thus simplifying the construction as compared to that of Fig. 1 infwhich two sets of connections are required one. for coolingthe roll and the other forcooling the bearing. This is accomplished by placing the passage through the bearing in series with the passageways through the roll and spindle. The construction of the roll and spindle in this form of apparatus is the same as the Fig. 1 construction and requires no further explanation. Two rings 30 and 31 are carried by the spindle and provided with suitable grooves and passages registering with the passages 25 and,2 6. Packing 32 is provided between the rings and also betweenthe ring 30 and. the bearing 33. 1.10

The bearing 33 is provided with a spiral groove 34 which is connected at its right hand end with the annular recess 35 around the periphery of the ring 30. Water admitted through the inlet pipe 36 flows through the ring 31 and passage 26 to the interior of the casting l3 and thence to the left through the pipe 8 as heretofore described in connection with Fig. l. The return fiow through the passageway 10 discharges through the openings 2.5 to the annular recess 35 and then flows through the spiral passage 34 to the outlet pipe 37. In this manner the cooling water is caused to first cool the roll and then the bearing.

Fig. 3 illustrates a further modification resembling that of Fig. 2 except that the parts are so arranged that the cooling water firstflows through the bearing 38 and then circulates through the roll, thus giving a somewhat greater cooling effect in so far as the bearing is concerned as is the case in the Fig. 2 construction.

The pipe 39 is somewhat differently arranged at its right hand end than is the case with the constructions of Figs. 1 and 2, the ring 40 being welded to the pipe and provided with the packing 41. The right hand end of the pipe is provided with the ports 42. The bearing 38 is provided with a spiral passageway 43 and the inlet pipe 44 is connected to the left hand end of this passageway. The right hand end of the passageway discharges into an annular recess 45 in the ring 46, such ring being provided with ports which register with the ports'47 through the wall of the spindle. To the left of the bearing member 38 is a ring 48 provided with suitable ports registering with the ports 49 through the wall of the spindle. Packing is provided on each side of the ring 48 as shown and also between the ring 46 and the end of the bearing member, 38. Water supplied through the'pipe 44 passes through the spiral groove 43 in the bearing member and discharges to the annular recess 45 at the end of the bear ing member 38. Water supplied through the pipe 44 passes. through the spiral groove 43 in the bearing member and discharges to the annular recess 45 in the'ring 46. It then passes through the ports 47 into the space surrounding the end of the pipe 39. The water then flows to the left through the ports 42 and the pipe 8, and returns through the passageway 10 as heretofore described'in connection with Fig. l. The return flow of water passes out through the ports 49 and the ports in the ring 48 to the discharge pipe 50. V In this construction as in that of Fig. 1, a plate 51 is secured to'the left hand end of the sleeve for keeping the parts inside the sleeve from endwise movement. The packing at each end of the sleeve is forced inward by means of the screws 52 which engage rings 53 in contact with the packing.

What we claim iszf 1. In combination in glass rolling apparatus including a pot or receptacle for carrying 'a bath of molten glass, a hollow sizing roll having a central body portion and bearing spindles at its ends, a supporting arm for one of said spindles including a sleeve surrounding the spindle and held against rotation, a bearing in the sleeve at the inner end thereof provided witha fluid cool: ing passage, meansin the roll and 'its spindles dividing it into two passageways communicating with each other in said body portion of the roll and terminating adjacent to but separated from each other in said sleeve, an inlet extending through the sleeve and communicating with one passageway, an outlet extending through the sleeve and connected with the other passageway, and connections whereby liquid may be circulated through the passage in the bearing and through said passageways in the roll and spindle.

, 2. Incombination in glass rolling apparatus including a pot or receptacle for carrying a bath of molten glass, a hollow sizing roll having a central body portion and bearing spindles at its ends, a supporting arm for one of said spindles including a sleeve surrounding the spindle and held against rotation, a bearing in the sleeve at the innerend'thereof provided with a fluid cooling passage, means in the roll and its spindle dividingit into two' passageways communicating with each other. in said body portion of the roll and terminating adjacent to but separated from each other in said sleeve, an inlet extending through the sleeve and communicating with one passageway, an outlet extending through the sleeve and connected with the other passageway, connections for causing a'fiow of cooling liquid through the passage in the bearing, and other connections to said inlet and outlet for causing va cooling flow of liquid through said passageways in the roll andspindle. V

3'. In combination in glass rolling apparatus including a pot or receptacle for carrying a bath of molten glass, a hollow sizing roll having a central body portion and bearing spindles at its ends, a supporting arm for one of said spindles including a sleeve surrounding'the spindle and held against rotation, abearing in the sleeve at the inner 'end thereof provided with a fluid cooling passage, means in the roll and its spindle dividing it into two passageways communicating with each other in said body portion of the roll and terminating adjacent to but separated from each other in said sleeve, and connections whereby liquid is caused to pass through the-passage in the bearing and said passageways.

4. In combination in glass rolling apparatus including a pot or receptacle for carrying a bath of'molten glass, a hollow sizing rollhaving a central body portion and bearing spindles at its ends, a supporting arm for one of said spindles including a-sleeve surrounding the spindle and held against rotation, a bearing in the sleeve at the inner end thereof provided with a fluid cooling passage, means in the roll and its spindle dividing it into two passageways communicating with each other in said body portion of the roll and terminating adjacent to' but separated-from each other in said sleeve, oneof said separated ends being connected to one end of said-passage in said bearing, and connections whereby a cooling flow of liquid is causedto pass in a circuit including said passage and said passageways.

5. In combination in glass rolling apparatus including a pot or receptacle for carrying a bath of molten glass, a hollow sizing roll having. a central body portion and bearing spindles at its ends, a supporting arm for one of said spindles including a sleeve surrounding the spindleand held against rotation, a bearing in the sleeve atthe inner end thereof provided with a fluid cooling passage, means in the roll and its spin-'- dle dividing it into two passageways communicating' with each other 'in said body portionof the. roll and terminating adjacent ,to but sepa rated from each other in said sleeve, one of said separated ends being connected to one end of said passage in said bearing, and connections whereby a cooling flow of liquid is caused to pass 1,939,907 first through the passage in the bearing and then dividing it into two passageways communicating with each other in said body portion of the roll and terminating adjacent to but separated from each other in said sleeve, one of said separated ends being connected to one end of said passage in said bearing, and connections whereby a cooling flow of liquid is caused to pass first through said passageways and then through said passage in the bearing.

' JOHN H. FOX.

WILLIAM OWEN. 

